This update contains improvements to enhance security and performance. In addition, this update includes fixes for vulnerabilities that an attacker can use to overwrite the contents of your computer's memory with malicious code.

This update contains several improvements to enhance stability and compatibility with documents that were created in Office 2008 for Mac and Office 2007 for Windows. If the Open XML File Format Converter for Mac is installed, this update enables Office 2004 for Mac to read and write Office documents that are in the Open XML Format. For more information about this update, please visit the Microsoft Web site.

This update fixes a vulnerability that an attacker can use to overwrite the contents of your computer's memory with malicious code. For more information about this update, see the Microsoft Knowledge Base article (KB949357).

This update fixes a vulnerability in Word 2004 that an attacker can use to overwrite the contents of your computer's memory with malicious code. For more information about this update, see the Microsoft Knowledge Base article (KB941809).

This update fixes a vulnerability that an attacker can use to overwrite the contents of your computer's memory with malicious code. For more information about this update, see the Microsoft Knowledge Base article (KB940763)

Improvements for Excel 2004
* Security is improved: This update fixes vulnerabilities in Excel 2004 that an attacker can use to overwrite the contents of your computer's memory with malicious code.

Improvements for Entourage 2004
* Microsoft Exchange public folder data loss issue is fixed: This update fixes an issue that causes data loss when public folder users who have a permission level of "Editor" or greater use Entourage to empty the cache for all public folders on the server running Exchange Server.
* Japanese postal code dictionary is updated: The Japanese postal code dictionary is updated with the latest information as of May 2007.